Sidewall tread for a tire



FIG. 1 is a perspective view of a sidewall tread for a tire showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof; the left side elevational view being identical thereto; and,

FIG. 4 is an enlarged fragmentary front elevational view thereof.

In the drawings, the broken lines immediately adjacent shaded surfaces define boundaries of the claim, all other broken lines depict environmental subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a sidewall tread for a tire, as shown and described. 